CN1112947C - Fire Equipment - Google Patents

Abstract

The invention relates to an apparatus for extinguishing fires in a space, whereby the apparatus comprises a spray head (1a ', 2 a') which is capable of producing a finely divided liquid mist of extinguishing medium with a high penetration capacity and at the same time produces a suction effect in the vicinity of the spray head. In order to obtain a device which is simple in construction and which is capable of extinguishing fires in spaces effectively and which at the same time can clean flue gases with a low water consumption, the spray head (1a ', 1 b', 2a ', 2 b') is arranged on a line (3a ', 3 b') which has a suction opening (67a ', 67 b') at a distance of 1m-10m from the floor (24) of the room and which has spray openings (45a ', 45 b') in the vicinity of the floor, whereby the spray head is arranged to spray from the suction opening to the spray openings in order to generate a suction effect in the suction opening.

Description

Fire Equipment

The invention relates to a device for extinguishing fires in a space, for which the device comprises a spray head capable of producing a highly penetrating extinguishing medium in the form of a finely divided liquid mist and at the same time generating suction in the vicinity of the spray head effect.

Such devices are known from publications WO 92/20453, WO 92/22353 and WO 94/16771. Practice has proved that these disclosed devices are very effective for extinguishing fires. To prevent the droplet size of the extinguishing liquid from becoming too large, WO 94/08659 describes a device in which gas is mixed into the extinguishing liquid. Due to the incorporation of gas, the droplet size can be kept small during the emptying of the accumulator.

In certain spaces such as rooms used for computers and other machines, besides those valuable machines, there are also bundles of electrical cables which can wreak havoc in the event of a fire. The cables usually have a plastic sheath of PVC. If a fire breaks out in such a room and the cables catch fire, noxious fumes are generated which not only endanger the human body but also damage sensitive machines such as computers. Known devices for fighting such fires cannot extinguish the fire quickly with small amounts of water. The use of certain media other than water-based extinguishing media, such as halides, to extinguish fires produces chemical products that are harmful to the environment, so water-based extinguishing media are preferred. It is important that the quantity of water used for extinguishing the fire is not large, since the damage caused by the water is thus kept low.

The present invention relates to a new type of equipment. It has a simple structure and is very effective in extinguishing a fire in a space such as a room as required, thereby allowing a small amount of extinguishing medium to be used while purifying combustion gases and fumes.

In order to achieve this purpose, the feature of the equipment of the present invention is mainly that the nozzle is installed on a pipeline that is provided with a suction hole on the ground 1m-10m away from the space and is provided with a nozzle hole near the ground, so that the nozzle is arranged to use To spray flow along the direction from the suction hole to the spray hole, so as to generate suction in the suction hole.

In order to obtain good results in large spaces, the duct preferably forms part of a piping system comprising a number of spray holes for spraying the mist of the extinguishing medium from the piping system at least mainly along the ground and suction For this purpose, the pipe system has a first extension pipe section, a second extension pipe section and an intermediate pipe section connecting the two extension pipe sections, whereby the spray holes are longitudinally arranged on the second extension pipe section, and the suction holes are longitudinally arranged on the first extension pipe section. On the extension pipe section, so that the second extension pipe section is arranged near the floor of the room, while the first extension pipe section is arranged 1m-10m away from the ground.

In open spaces, the apparatus preferably has a further piping system arranged at a distance from the above piping system so that the two piping systems are located near opposite walls of the room. As a result, the fumes are effectively sucked away without the fumes mixing in the space. For smoke extraction and fire extinguishing in a room with a subfloor, the device also includes a network of pipes arranged in the subfloor, for which purpose at least one spray head is arranged in the pipe network in order to spray the extinguishing medium Spray into the pipe network, whereby the pipe network includes nozzle holes for spraying mist from the pipe network and suction holes for sucking the smoke into the pipe network and allowing the extinguishing medium to flow from the nozzle holes to it, for which the pipe network has The first extension pipe part, the second extension pipe part and the intermediate pipe part connecting the two extension pipe parts, the first extension pipe part is at least substantially parallel to the second extension pipe part, and the spray hole and the suction hole are along the extension pipe part The portrait is set on it.

Preferred embodiments of the present invention will be described in detail below.

The greatest advantage of the device according to the invention is that it is possible to extinguish a fire with a simple device and at the same time effectively purify the smoke. Since fires are extinguished with very small quantities of extinguishing medium, this device can also be used to extinguish fires in an "environmentally friendly" manner, which will cause minimal material damage.

The present invention will be specifically described below with reference to the accompanying drawings, wherein:

Fig. 1 represents a preferred embodiment of the present invention;

Fig. 2 shows the driving mechanism of Fig. 1 more specifically;

Fig. 3 represents the part of Fig. 2;

Figures 4-6 show partial alternatives of the invention.

In Fig. 1, reference numeral 100 denotes a room in which the fire fighting apparatus of the present invention is installed. The shown room 100 is a room for housing computers 101, 102 and it has openings 103-105 leading to the sub-floor 23 of the room. However, this room can in principle be any type of room. The subfloor 23 houses a number of cables (not shown) for the computers 101, 102 and other machines (not shown). Openings 103-105 are used for the cables of the computers 101, 102 and to pass cold air to the computers. The invention is particularly suitable for use in rooms where expensive machinery susceptible to smoke and/or water damage is installed. Reference numerals 200 , 300 denote heat-sensitive showers provided near the ceiling of the room 100 . These sprinklers are preferably ones capable of producing a finely divided liquid mist of the extinguishing medium with high penetrating power or high penetrating force while simultaneously generating suction in the vicinity of the spray head. Due to its penetrating ability, the extinguishing medium can enter the area where the fire is located. Such showers are described in publications WO 92/20453, WO 92/22353 and WO 94/16771.

This set comprises two rectangular pipe systems 3a', 3b' arranged at a distance from each other above the sub-floor 23 at the end walls of the room 100, thus having spray heads 1a', 2a of the same type as the showers 200, 300 ', 1b', and 2b' are arranged in the piping system, that is, the nozzle under high pressure can produce a fine liquid mist fire extinguishing medium with strong penetrating ability and simultaneously generate negative pressure near the nozzle. The nozzles 1a', 2a', 1b', 2b' are preferably the nozzles disclosed in publications WO 92/20453, WO 92/22353 and WO 94/16771.

The piping system 3a' comprises a first extension pipe section 910a', a second extension pipe section 811a' and intermediate pipe sections 12a', 13a' connecting these two extension pipe sections and having corresponding spray heads 1a', 2a' installed therein. The second extension pipe section 811a' has many nozzle holes 45a', such as 3-10 nozzle holes, and the first extension pipe section 910a' has many suction holes 67a', such as 3-10 suction holes. The spray holes 45a' are arranged along the longitudinal direction of the pipe section 811a' and the suction holes 67a' are arranged along the longitudinal direction of the pipe section 910a'. The function of the suction hole 67a' is to suck the smoke into the pipe network 3a'.

The pipe section 811a' is arranged just above the floor surface 24 so as to spray liquid mist substantially in the direction of the floor. Pipe section 910a' is disposed approximately 3 meters above floor surface 24. The distances mentioned above can of course vary depending on the application. A distance of about 1 meter to about 5 meters between pipe sections 811a' and 910a' is effective for most practical applications, but if the room is very high, the above distance can be extended to about 10 meters. The pipe sections 910a', 811a' lie substantially in the same plane, which is substantially transverse to the floor surface 24.

The pipe sections 910a', 811a' are made of plastic and may have a diameter of eg 100mm-150mm. The diameter of spray hole and suction hole is preferably 5mm-40mm.

The structure of the piping system 3b' is similar to that of the piping system 3a' and the way of laying the piping systems 3a' and 3b' against the walls and floor 24 of the room is the same. Corresponding parts are denoted by the same reference numerals, except that "b" is used instead of "a" in the reference numerals. The piping system 3b' works in the same way as the piping system 3a'.

A rectangular network of pipes, the whole of which is indicated by reference numeral 3, is provided in the sub-floor 23 of the room 100, the upper surface 24 of which is indicated by a dotted line. Two spray heads 1 , 2 of the same type as the spray heads 1 a ′, 2 a ′, 1 b ′, 2 b ′ are arranged in the pipe network 3 .

The pipe network 3 includes a first extension pipe portion 910 and a second extension pipe portion 811 . The first extension tube portion 910 lies substantially in the same plane as the tube sections 910a', 811a'; and the second extension tube section 811 lies in substantially the same plane as the tube sections 910b', 811b'. The diameter of the tubes 910, 811 may eg be 100mm-150mm and said tubes are made of plastic. The tube parts 910, 811 are connected at their ends with the first intermediate tube part 12 on which the spray head 1 is mounted and the second intermediate tube part 13 on which the spray head 2 is mounted. The spray heads 1 and 2 are located in the middle of the pipe sections 12 and 13 respectively, but it is conceivable that these spray heads could be located elsewhere in the pipe network 3 . Spray heads 1 and 2 are arranged to spray in opposite directions, such that spray head 1 sprays toward tube portion 811 and spray head 2 sprays toward tube portion 910 . The first pipe part 910 has four spray holes 5 and four suction holes 6 . The spray hole 5 on the tube part 910 is separated from the suction hole 6 by a plug 106 . The second pipe part 811 has four spray holes 4 and four suction holes 7 and one plug 107 accordingly. The spray hole 4 is set to spray the fire extinguishing medium to the suction hole 6, and the spray hole 5 is set to spray the fire extinguishing medium to the suction hole 7. The diameters of the spray holes 4, 5 and the suction holes 6, 7 are preferably 5mm-40mm, depending on, for example, the number and purpose of the holes 4-7.

As a source of power for supplying the fire extinguishing medium to the sprinklers 200, 300 and the spray heads 1a', 2a', 1b', 2b' and the spray heads 1, 2, this apparatus comprises a ' drive mechanism. The accumulator comprises three pressure vessels 16' with a volume of 50 liters and two pressure vessels 16a, 16b with a volume of 10 liters. The pressure vessels 16', 16a, 16b contain a fire extinguishing fluid consisting of a water-based fluid such as water with or without additives. The pressure vessel 16' is approximately eighty percent full of fire extinguishing fluid before the vessel is emptied and fire suppression begins. The number and size of the pressure vessels may vary depending on the purpose and size of the room 100 . In the case of a larger room, the pressure vessel is usually required to have a larger volume. In the case of small rooms, the volume of the pressure vessels 16a, 16b can be halved, for example.

The pressure vessels 16', 16a, 16b that supply the fire extinguishing medium to the sprinklers 200, 300 and the spray heads 1a', 2b' and the spray heads 1, 2 respectively are connected to a gas cylinder 21 with a volume of 50 l through a conduit 108. The pressure vessel 16' is provided with a corresponding liquid supply standpipe 17'. The volume of gas cylinder 21 is selected according to the volume of room and other factors. The gas is nitrogen at a pressure of 20 MPa. A gas cylinder 21 with different pressures can be used, and the gas cylinder can be a nitrogen cylinder filled with a pressure of 3MPa-30MPa. Before starting to extinguish the fire, the pressure is usually 10MPa-30MPa. The advantage of using nitrogen is that an appropriate weight of the extinguishing liquid can be obtained, whereby the liquid can first sink to the ground and then the gaseous component of the extinguishing medium can rise and thereby reduce the oxygen content in the room 100 and in this way extinguish the fire or at least Keep the fire under control. In addition to nitrogen, other non-flammable gases such as argon or carbon dioxide can be used.

Reference numeral 115 denotes a check valve (see FIG. 2 ) that prevents the extinguishing medium from flowing to the rightmost pressure vessel 16 ′ through the liquid supply standpipe 17 ′ of the left two pressure vessels 16 ′ but allows the extinguishing medium to flow back.

The drive mechanism 14 is shown in detail in FIG. 2 ; while FIG. 3 shows a detail of FIG. 2 . The liquid supply riser 17' of the pressure vessel 16' includes three side openings 18' at the bottom such that about 70% of the liquid supply riser portion is located above the side openings and approximately 30% of the liquid supply riser portion is located at the side openings below. A suction port 19' is provided at the bottom of the liquid supply standpipe 17'.

Referring to Figure 3 which shows an enlarged view of the bottom of the liquid supply riser 17', the bottom of the liquid supply riser 17' is narrowed by a throttle valve 20'. A throttle valve 20' is formed at the bottom of the liquid supply riser 17' below the side opening 18' of the liquid supply riser. The throttling valve 20' is formed by a constricted tube portion on the liquid supply standpipe 17'. The constricted tube portion forms a bore with a diameter d2 of 0.5 mm, while the nominal diameter d1 of the liquid supply standpipe 17' is typically 8 mm to 15 mm. The diameter d2 of the throttle valve 20' is preferably 0.2mm-4mm, and most preferably 0.3mm-2mm. The selection of the diameter d2 of the throttle valve 20' depends on many factors, such as the types of showers 200, 300 and shower heads 1a', 2a', 2b', the number of shower heads, the driving pressure in the gas cylinder 21, the type of gas, the supply The diameter d1 of the standpipe 17', the number and size of the side openings 18' and the intended use of the device, ie the type of fire suppression.

The pressure vessels 16a, 16b comprise gas supply pipes 120a, 120b through which the gas passes into the conduit 108 in order to supply the pressure vessels with gas from the cylinder 21 .

Reference numeral 122 denotes a check valve which prevents fluid from flowing from the pressure vessel 16b to the cylinder or pressure vessel 16a.

The pressure vessel 16a is filled with water just before use, ie before starting to extinguish the fire. The outlet 121a of the air supply pipe 120a is set so that it has a sufficiently large distance from the opening 130a at the bottom of the pressure vessel 16a, such as about 20cm or 30cm, so that water is discharged from the pressure vessel to a channel through the opening 130a. To the output pipe 110 of the spray head 1, 2. Probably a minimum distance of at least about 4 cm is required. This distance is required so that gas does not flow into opening 130a until the water in pressure vessel 16a has been emptied. The conduit leading to the outlet pipe 110 communicating with the spray heads 1, 2 is indicated by reference numeral 131a.

The pressure vessel 16b was filled with approximately 80% water before being emptied (see Figure 2). In the gas storage space above the pressure vessel 16b, nitrogen gas is output from the gas cylinder 21 at high pressure to generate a pressure of eg 14 MPa before starting to empty the accumulator 15. The pressure vessel 16b has a liquid supply standpipe 17 extending from the pressure vessel to the outlet pipe 110 from bottom to top. As for the liquid supply standpipe 17, a throttle valve 121 is provided. The function of the throttle valve 121 is to create a sufficient flow resistance for the water so that the water in the pressure vessel 16a is first emptied, and then the pressure vessel 16b can start to be emptied through the throttle valve.

Pressure vessel 16a is used to purify smoke and combustion gases, while pressure vessel 16b is used to generate a very fine mist containing water droplets and nitrogen gas.

The device shown in FIG. 1 is brought into service on the basis of a signal from a smoke detector 111 placed near the ceiling level of the room 100 . Said signal opens a solenoid valve 109 arranged between the gas cylinder 21 and the pressure vessel 16', 16a, 16b. It is conceivable that the showers 200, 300 of this arrangement could be pressure balanced showers as disclosed in WO 92/15370 and WO 94/1677 or be thermally activated. When the electromagnetic valve 109 is opened according to the signal, nitrogen gas is sent into the pressure vessel 16', 16b, and an initial pressure of, for example, 14 MPa is formed in the vessel. This pressure is formed in the gas storage space of the pressure vessel 16', 16b at the upper part of the pressure vessel. The gas storage spaces of the pressure vessels 16' and 16b account for about 20% of the volume of the pressure vessels (see Figure 2). The nitrogen acts as a propellant gas for driving the water out of the pressure vessel 16', 16a. Since the pressure vessel 16a has no liquid supply standpipe for water supply, freezing of the water is impossible. And the water is reliably discharged out of the pressure container 16a by the pressure from the gas cylinder 21 . After the water in the pressure vessel 16a has been emptied, when the water from the pressure vessel 16b flows through the throttle valve 121 to the conduit 131a due to the pressure in the pressure vessel and mixes with the gas, the gas simultaneously starts to flow into the outlet pipe through the opening 130a 110. The ratio of the amount of gas flowing through the pressure vessel 16a to the amount of water flowing from the pressure vessel 16a is, for example, 300:1 and suitably 100:1-500:1. This results in an extremely fine mist from the nozzles 1,2. The air pressure in the upper part of the pressure vessel 16b is the source of power for initially causing the water to flow to the outlet pipe 110 .

Simultaneously with or shortly after (controlled by a timer) pressure vessel 16a is emptied, pressure vessel 16' is emptied whereby water flows in through suction 19' and side opening 18' of feed standpipe 17'. When the pressure vessel 16' is emptied, its level drops, resulting in an increase in the volume of the pressure vessel storage space for containing gas. The air/water ratio exiting the feed standpipe 17' is determined based on the position of the water level within the pressure vessel 16'. Initially, the side opening 18' and the suction port 19' send water only through the throttle valve 20 into the supply standpipe 17'. Gas should not be mixed into the extinguishing liquid when starting to extinguish the fire, because in this case the suction initially required in the suction holes 6, 7, 67a', 67b' is not yet complete. Water is used to draw and purify combustion gases or fumes and to cool the flame at the same time. When the water level reaches the level of the side opening 18' and eg 11-3 liters of water are sprayed from the pressure vessel 16', nitrogen gas starts to mix into the water as the nitrogen flows through the side opening 18'. Subsequently, the air pressure dropped to a value significantly lower than 14 MPa. Since the air pressure in the pressure vessel 16' has dropped significantly compared with it, the amount of gas required to obtain small liquid droplets such as 10 μm-20 μm is relatively large. Droplet size increases with decreasing pressure if other parameters remain constant. Although the gas is mixed into the extinguishing liquid, the relatively high velocity of the smaller droplets is still obtained due to the strong initial suction at the start of the extinguishing, and the suction holes 6, 7, 67a', 67b' work ideally so that the medium Flow from the spray holes 4, 5, 45a', 45b' to the suction holes 6, 7, 67a', 67b'. If the valves 109, 160 are not closed, the emptying of the pressure vessel 16' continues until the pressure vessel is completely emptied of water.

Due to the provision of the throttle valve 20', a relatively large pressure difference P1-P2 between the inside and the outside of the liquid supply standpipe 17' is formed at the side opening 18' (see FIG. 3). This pressure differential, which may be, for example, about 5 MPa, allows nitrogen gas to flow sufficiently through the side opening 18' when the water level inside the pressure vessel 16' drops below the side opening 18'. Since the gas can effectively flow into the side opening 18', the result can be obtained in the final stage of extinguishing a small, such as 10 μm-20 μm or even Jet stream droplets smaller than 10 μm. A small amount of water is sufficient due to the sufficient incorporation of the gas.

The side openings can of course be arranged at different heights of the supply standpipe 17 ′, whereby the desired droplet size and continuity of the extinguishing medium during emptying can be achieved by means of the height position and size of the side openings. Here, the throttle valve is arranged below the lowest side opening, whereby a large pressure difference is obtained at all side openings, which is advantageous when trying to mix as much gas as possible into the liquid. However, it is contemplated that the side openings could be located both above and below the throttle valve 20'. However, it is important that the throttle valve 20' be arranged below the lowest side opening, whereby at least at this lowest side opening a greater pressure differential is obtained, which allows the gas to pass through the Side opening for inflow.

If the throttle valve 20' is constituted by a hole whose diameter d2 is sufficiently small compared with the diameter of the side opening 18', the pressure difference P1-P2 becomes large and fluid can flow in through the side opening. The diameter of the side opening is preferably 0.5mm-5mm, most preferably 1mm-3mm. In the embodiment of Fig. 1, the diameter of the side opening is 2 mm.

The liquid supply standpipe 17' in the pressure vessel 16' does not necessarily have a side opening 18' and a throttle valve 20'.

Through the pipe network 3, two medium flows are formed in the subfloor in opposite directions and flow along the floor surface, and the smoke suction phenomenon is also generated in the upper part of the room 100 through the pipe system 3a', 3b', which will be described below It describes.

When the equipment in Fig. 1 was put into operation after the smoke detector 111 sent a signal to the driving mechanism 14, the spray nozzles 1a', 2a', 1b', 2b', 200, 300, 1, 2 first started to spray out nitrogen without adding nitrogen. mist flow. Nozzles 1a', 2a', 1b', 2b' are sprayed along the middle section of the pipe system 3a', 3b', so that the initially purified gas (gas purified from flue gas and combustion gas) and the gas containing water mist later Nitrogen gas is discharged from the injection holes 45a', 45b'. The nozzles 1, 2 spray along the middle pipe parts 12, 13 of the pipe network 3, so that the initially purified air is discharged from the spray holes 4, 5, and then the mist is sprayed from the spray holes 4, 5. While the spray nozzles 1a', 2a', 1b', 2b', 1, 2 were spraying, they produced a strong suction effect behind the nozzle and produced negative suction in the suction holes 6, 7 and 67a', 67b' respectively. pressure. The smoke is sucked into the suction hole and absorbed by the mist jet from the nozzle. The absorbed fumes are then absorbed by the extinguishing medium in the pipe system 3 a ′, 3 b ′ and sucked into the pipe network 3 . Due to the intake of combustion gases and fumes by the piping systems 3a', 3b' and the pipe network 3, the air in the room 100 is so effectively freed of dust and fumes that they do not cause any damage and injury.

In order to collect soot residues, the intermediate pipe sections 12, 13 are preferably provided with recessed spaces (not shown) in the other straight pipe sections. This space is located on the pressure side of the spray heads 1,2. The pipe system 3a', 3b' may have in the lower part a collector as shown in Figures 5 and 6 and denoted by reference numerals 200'', 200"".

After the fire extinguishing liquid in the pressure vessels 16a', 16b', 16' was emptied, smoke and smoke were removed from the room 100 and the subfloor 23, which was filled with nitrogen-containing mist fire extinguishing medium, and the room was particularly It is the lower part of the chamber that is filled with a mist of spray that then sinks to the ground. Because of the water in the fire extinguishing medium, the mist of the fire extinguishing medium in the subfloor 23 and the mist of the fire extinguishing medium near the floor surface 24 are heavier, and the mist of the fire extinguishing medium sprayed into the subfloor 23 and above the room floor first remains In the subfloor and on the floor of the room, extinguish the flameless fire separately. Usually after a few minutes, the water slowly sinks and releases nitrogen from the water, which, being lighter than air, begins to rise in the room. As the nitrogen ascends, it extinguishes on its way up any areas of fire that may still be smoking and burning in the room. Interestingly, the nitrogen will enter the computers 101, 102 due to the "chimney effect", so that the nitrogen goes up the computers like a chimney. Nitrogen flows into the computers 101, 102 through openings 103-105. As the nitrogen gas enters the computer 101, 102 and rises up the computer, it extinguishes all possible flameless fires within the computer.

According to the above situation, the following words can also be used to describe the working conditions of the system:

1. In the first stage, smoke, smoke and heat are sucked from the room by spraying water at high pressure only through the nozzles 1, 2, 1a', 1b', 2a', 2b'. When water is sprayed, a strong suction action is produced and the smoke and dust sucked into the pipe network 3 and pipe system 3a', 3b' must pass through the water mist purified in the pipe network and pipe system. When the water mist is sprayed only through the pipe network (i.e. without nitrogen) and the water mist must pass through at least one elbow, the water mist is converted into water that is collected in a tank (not shown) or discharged into the sewer, so , to prevent sewage from entering the room where sensitive electrical equipment is placed. A mesh or grid (not shown) in the pipe network and piping system can have the same effect as a pipe bend (curved pipe) to prevent smoke containing fire extinguishing gas from being sprayed into rooms and subfloor spaces. Then, purified air (free of smoke, dust and water) is sprayed out from the pipe network and pipe system through the spray holes 4, 5, 45a', 45b'.

2. When the gas is fed into the water mist and using the accumulator 15, 15', the water droplets are further refined, thus achieving a higher velocity and thus being able to flow through the bend without re-converting into water Tube. In this case, the extinguishing fluid mixed with gas can flow out of the pipe network 3 and pipe systems 3a', 3b' and extinguish the fire.

3. Fire extinguishing in the subfloor 23 is achieved by mixing the gas into the water mist, which makes the water/gas mixture heavier than air. The pressure in the subfloor builds up and when a sufficient concentration is achieved, the water/air mixture rises through the vents 103, 105 into the computer. Another reason is that the nitrogen/water mixture is cooler than the upper part of the room, so the mixture rises towards the warmer part of the space. Experiments have shown that the taller the device or computer, the faster the fire will be extinguished. In the case of higher equipment, the chimney effect is stronger.

So, in summary, the system of Figure 1 works by sucking and cleaning the fumes by injecting water mist, and then changing the composition of the mist by injecting a mist containing more nitrogen and less water. The moisture in the fog causes the nitrogen to sink downward to the ground. As the water sank further, the nitrogen escaped from the fog and rose, which extinguished any fires that might still be smoking. No current is required to start the device, which is an advantage since current is not always available in the event of a fire.

In the foregoing, the invention has been described with reference to only one embodiment. It is pointed out, however, that various modifications may be made to the details of the invention within the scope of the appended claims. Therefore, for example, the shape and size of the pipe system and pipe network are variable, and the number of nozzles is variable, and the number of suction holes and spray holes can also be changed. The number of suction holes and spray holes in the middle pipe part and pipe section can be, for example, 2-20. It is also conceivable that the intermediate pipe section may have (especially if the intermediate pipe section is longer) more than one spray head capable of producing a penetrating finely dispersed water mist extinguishing medium while simultaneously generating suction in the vicinity of the spray head effect. The finely dispersed water mist is intensified by said suction due to the arrangement of these spray heads one behind the other at suitable intervals and their arrangement for spraying in the same direction. It is also conceivable that one or more spray heads may be provided in the first and second extension pipe sections, instead of or in addition to the spray heads provided on the intermediate portion. The first extension pipe section need not be parallel to the second extension pipe section, although the parallel construction is simple, takes up little space in the room and produces good results. When using an extinguishing medium source with a liquid accumulator, the throttle valve can be formed, for example, as an opening in the wall of the liquid supply riser at the lowest end. The number of side openings in the liquid supply riser may be greater than the number of side openings shown in the figures. It is also conceivable that there may be only one side opening. The suction mechanism, ie the piping system, in the upper part of the room or space may simply be a standpipe with a suction hole at the upper end and an elbow (to prevent water from flowing into the room) and spray holes at the lower end. But for a more even distribution, it's best to use a longer pipe at ceiling height and a shorter one at ground level. As for small rooms, it is sufficient to place a pipe in the room. Large rooms require two or more tubes with dual spray heads on each end of the tubes. It should be noted that the invention can be implemented with a drive mechanism without an accumulator. However, the accumulator according to Figure 1 and the content of the appended claims is particularly suitable for generating the finely dispersed liquid mist required by the present invention.

Claims (26)

1. A device for extinguishing a fire in a space (100), for which purpose the device comprises such a nozzle (1a', 1b', 2a', 2b'; 1"; 1''; 1""; 2 "") capable of producing a finely dispersed mist-shaped fire extinguishing medium with strong penetrating power and at the same time generating a suction effect near the spray head, and also comprising a drive mechanism (14) for operating the spray head, characterized in that the spray head (1a', 1b', 2a', 2b'; 1″; 1; 1″″; 2″″) arranged on a line with suction holes (67a′, 67b′) at 1m-10m away from the room floor (24) ) and on the pipes (3a', 3b'; 3"; 3; 3"") with spray holes (45'a, 45b') near the ground, the nozzles are thus arranged along the line from the suction hole to the spray hole Direction of jet flow in order to generate suction in the suction hole. 2. Apparatus according to claim 1, characterized in that said pipes form part of a piping system (3a'; 3"; 3''; 3"") comprising a plurality of (24) Spray holes (45a'; 45"; 45; 45"") for spraying mist fire extinguishing medium from the piping system and many suction holes (67a'; 67" for sucking smoke into the piping system ; 67; 67″″), for which this pipe system has a first extension pipe section (910a′; 910a″; 910a; 910a″″), a second extension pipe section (811a′; 811a″; 811a; 811a " ") and the intermediate pipe section (12a', 13a' connecting these two extension pipe sections; 13a "; 13a; 12a "", 13a ""), thus spray holes (45a'; 45 "; 45"") is longitudinally arranged on the second extension pipe section (811a'; 811a"; 811a; 811a""), and the suction hole (67a'; 67"; 67; 67"") is longitudinally arranged on the second On an extension pipe section (910a'; 910a"; 910a'; 910a""), a second extension pipe section (811a'; 811a"; 811a'; 811a"") is thus arranged near the ground (24) of the space, and The first extension pipe section (910a'; 910a"; 910a''; 910"") is arranged 1m-10m above the ground (24). 3. The apparatus according to claim 2, characterized in that the first extension pipe section (910a'; 910a"; 910a''; 910a"'') is directed in parallel to the second extension pipe section (811a'; 811a"; 811a''; 811a ""). 4. The device as claimed in claim 2, characterized in that it comprises another piping system (3b'), which comprises a number of fire extinguishing sprays for spraying out from the piping system along the ground (24). The nozzle hole (45b') of the medium and many suction holes (67b'), for this reason this piping system has a first extension pipe part (910b'), a second extension pipe part (811') and a connecting these two The middle pipe part (12b', 13b') of the extension pipe part, the nozzle hole (45b') is thus arranged longitudinally in the second extension pipe part (811b'), and the suction hole (67b') is arranged longitudinally in the second In one extension pipe part (910b'), the second extension pipe part (811b') is arranged near the floor (24) of the room, and the first extension pipe part (910b') is arranged 1m-10m above the floor . 5. The apparatus according to claim 4, characterized in that the first extension tube part (910b') is directed parallel to the second extension tube part (811b'). 6. The device according to claim 4, characterized in that said other piping system (3b') is arranged at a distance from this piping system (3a'), so that the two piping systems (3a', 3b') is located near the opposite wall of the room (100). 7. The device according to claim 1, which can be used in a room (100) with a subfloor (23), characterized in that the device also comprises a pipe network (3) arranged in the subfloor (23) ), for which at least one spray head (1, 2) is arranged in the pipe network in order to spray the mist fire extinguishing medium into the pipe network, the pipe network comprises for this purpose nozzle holes (4, 5) for spraying from the pipe network and It is used to suck dust and smoke into the pipe network and make the fire extinguishing medium flow to its own suction holes (6, 7) through the spray holes. For this reason, the pipe network has a first extension pipe part (910), a second extension pipe part (811) and an intermediate pipe part (12, 13) connecting these two extension pipe parts, the first extension pipe part is directed to the second extension pipe section (811) in parallel for this reason, and the spray hole and the suction hole are along the extension pipe The longitudinal direction of the part is arranged on these two extension tube parts. 8. Apparatus according to claim 7, characterized in that the spray heads (1, 2) are arranged on the intermediate pipe section (12, 13). 9. The device according to claim 7 or 8, characterized in that the pipe network (3) is rectangular, so the intermediate pipe section comprises a first intermediate pipe section (12) and a second intermediate pipe section (13) , the two pipe parts (12, 13) are parallel and spaced apart from each other, whereby the spray head (1) is arranged on the first intermediate pipe part (12), and the apparatus includes a further spray head (2) capable of producing The finely dispersed liquid mist with high penetrability and at the same time produces a suction effect in the vicinity of the other spray head (2), which is arranged on the second intermediate pipe part (13). 10. The device according to claim 9, characterized in that, the first extension pipe part (910) comprises a suction hole (6) and a spray hole (5), whereby the spray hole is arranged on the first extension pipe part. section (9), and the suction hole is arranged in the second section (10) of the first extension pipe part, the second extension pipe part (811) includes the nozzle hole (4) and the suction hole (7), so that the nozzle hole arrangement On the first section (8) of the second extension pipe part, and the suction holes are arranged on the second section (11) of the second extension pipe part, so that the nozzle holes of the second extension pipe part are arranged along the The direction of the middle pipe part (12, 13) sprays to the suction hole of the first extension pipe part, and the spray hole of the first extension pipe part is arranged to flow toward the suction hole of the second extension pipe part in a direction parallel to the middle pipe part. jet stream. 11. The apparatus according to claim 7, characterized in that the first extension pipe section (910) and the first extension pipe section (910a') and the second extension pipe section (811a') of the piping system (3a') are arranged In the same plane, which is transverse to the ground (24); the second extension pipe part (811) and the first extension pipe section (910b') and the second extension pipe section (811b') of the additional pipe system (3b') are are arranged in the same plane, which is transverse to the ground (24). 12. The apparatus according to claim 3 or 11, characterized in that the pipe system (3a') is rectangular, whereby the intermediate pipe section comprises a first intermediate pipe section (13a') and a second intermediate pipe section (12a' ), the two intermediate pipe sections (12a', 13a') are parallel and spaced from each other, and the spray head (1a') is thus arranged on the first intermediate pipe section (13a'); this equipment includes such another spray head (2a' ), which is capable of producing a finely dispersed liquid mist fire extinguishing medium with strong penetrating power and at the same time produces a suction effect near the other spray head (2a'), which is arranged on the second intermediate pipe section (12a') . 13. The device according to claim 7, characterized in that the nozzles (1a', 2a', 1b', 2b') of the piping system (3a', 3b') and the nozzles (1, 2b') of the pipe network (3) 2) Connected to a drive mechanism (14) with an accumulator (15, 15'). 14. Apparatus according to claim 13, characterized in that the accumulator (15, 15') comprises at least one pressure vessel (16a, 16b) with a space for the extinguishing liquid and a space for the propellant gas , 16'). 15. Apparatus according to claim 14, characterized in that the gas source (21, 21') is connected to the pressure vessel (16a, 16b, 16') in order to supply said vessel with propellant gas. 16. The apparatus according to claim 15, characterized in that the fire extinguishing liquid in the pressure vessel (16a, 16b, 16') is a water-based liquid, and the gas source is a pressure-resistant gas cylinder filled with a non-combustible gas (21,21') constituted. 17. The device according to claim 16, characterized in that said gas cylinder is a nitrogen cylinder (21, 21') filled with a pressure of 3MPa-30MPa. 18. The apparatus according to claim 17, characterized in that the accumulator (15') for the piping system (3a', 3b') comprises a pressure vessel ( 16'), this liquid supply standpipe (17') is equipped with at least one side opening (18') and a nozzle (1a ', 2a', 1b', 2b') suction inlet (19'), the liquid supply standpipe (17') has a throttle valve (20' in the area below said at least one side opening for this purpose ). 19. Apparatus according to claim 18, characterized in that the spray heads (1, 2) of the pipe network (3) are arranged to be actuated by an accumulator (15) connected to the pipe system ( 3a', 3b') the accumulator (15') is separated and it comprises two pressure-resistant bottles (16a, 16b), wherein one pressure-resistant bottle (16a) is used to completely discharge its liquid composition into an outlet pipe (110), the outlet pipe leads to the nozzles (1, 2) of the pipe network, and then another pressure bottle (16b) is arranged to be emptied, so that the propellant gas from the cylinder is simultaneously supplied to the outlet pipe , in order to obtain a fine liquid mist. 20. Device for extinguishing a fire in a subfloor (23), characterized in that the device comprises a pipe network (3) to be arranged in the subfloor (23), said pipe network comprising at least one The nozzles (1, 2) in the nozzle are capable of producing a fine mist fire extinguishing medium while producing a suction effect near the nozzle, and also include a driving mechanism (14) for operating the nozzle, and the pipe network includes Spray holes (4, 5) and suction holes (6, 7) for spraying in the pipe network, the suction holes are used to suck dust and smoke into the pipe network and make the fire extinguishing medium flow from the spray holes to the suction holes, the pipe The net has a first extension pipe part (910), a second extension pipe part (811) and an intermediate pipe part (12, 13) connecting the two extension pipe parts, and the spray hole and the suction hole are along the extension pipe part. The longitudinal arrangement is on these two extension pipe parts. 21. The apparatus according to claim 20, characterized in that the first extension tube part (910) is directed parallel to the second extension tube part (811). 22. Apparatus according to claim 20, characterized in that the spray heads (1, 2) are arranged on the intermediate pipe section (12, 13). 23. The device according to claim 20 or 22, characterized in that the pipe network (3) is rectangular, so the intermediate pipe section comprises a first intermediate pipe section (12) and a second intermediate pipe section (13) , the two pipe parts (12, 13) are parallel and spaced apart from each other, whereby the spray head (1) is arranged on the first intermediate pipe part (12), and the apparatus includes a further spray head (2) capable of producing The finely dispersed liquid mist with high penetrability and at the same time produces a suction effect in the vicinity of the other spray head (2), which is arranged on the second intermediate pipe part (13). 24. The device according to claim 23, characterized in that, the first extension pipe part (910) comprises a suction hole (6) and a spray hole (5), whereby the spray hole is arranged on the first extension pipe part. section (9), and the suction hole is arranged in the second section (10) of the first extension pipe part, the second extension pipe part (811) includes the nozzle hole (4) and the suction hole (7), so that the nozzle hole arrangement On the first section (8) of the second extension pipe part, and the suction holes are arranged on the second section (11) of the second extension pipe part, so that the nozzle holes of the second extension pipe part are arranged along the The direction of the middle pipe part (12, 13) sprays to the suction hole of the first extension pipe part, and the spray hole of the first extension pipe part is arranged to flow toward the suction hole of the second extension pipe part in a direction parallel to the middle pipe part. jet stream. 25. The device according to one of claims 20 to 22, characterized in that the at least one spray head (1, 2) of the pipe network (3) is connected to a drive (14) with a liquid accumulator (15) ) connected. 26. The device according to claim 25, characterized in that said accumulator (15) comprises a gas cylinder (21) filled with a pressure of 3MPa-30MPa.

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